mirror of https://github.com/zulip/zulip.git
104 lines
3.7 KiB
Python
104 lines
3.7 KiB
Python
# Webhooks for external integrations.
|
|
import re
|
|
from typing import Any, Dict, Optional
|
|
|
|
import orjson
|
|
from django.http import HttpRequest, HttpResponse
|
|
from django.utils.translation import gettext as _
|
|
|
|
from zerver.decorator import webhook_view
|
|
from zerver.lib.exceptions import InvalidJSONError
|
|
from zerver.lib.request import REQ, has_request_variables
|
|
from zerver.lib.response import json_success
|
|
from zerver.lib.webhooks.common import check_send_webhook_message
|
|
from zerver.models import UserProfile
|
|
|
|
|
|
@webhook_view("SlackIncoming")
|
|
@has_request_variables
|
|
def api_slack_incoming_webhook(
|
|
request: HttpRequest,
|
|
user_profile: UserProfile,
|
|
user_specified_topic: Optional[str] = REQ("topic", default=None),
|
|
payload: Optional[Dict[str, Any]] = REQ("payload", converter=orjson.loads, default=None),
|
|
) -> HttpResponse:
|
|
|
|
# Slack accepts webhook payloads as payload="encoded json" as
|
|
# application/x-www-form-urlencoded, as well as in the body as
|
|
# application/json. We use has_request_variables to try to get
|
|
# the form encoded version, and parse the body out ourselves if
|
|
# # we were given JSON.
|
|
if payload is None:
|
|
try:
|
|
payload = orjson.loads(request.body)
|
|
except orjson.JSONDecodeError: # nocoverage
|
|
raise InvalidJSONError(_("Malformed JSON"))
|
|
|
|
if user_specified_topic is None and "channel" in payload:
|
|
user_specified_topic = re.sub("^[@#]", "", payload["channel"])
|
|
|
|
if user_specified_topic is None:
|
|
user_specified_topic = "(no topic)"
|
|
|
|
body = ""
|
|
|
|
if "blocks" in payload:
|
|
for block in payload["blocks"]:
|
|
body = add_block(block, body)
|
|
|
|
if "attachments" in payload:
|
|
for attachment in payload["attachments"]:
|
|
body = add_attachment(attachment, body)
|
|
|
|
if body == "" and "text" in payload and payload["text"] is not None:
|
|
body += payload["text"]
|
|
if "icon_emoji" in payload and payload["icon_emoji"] is not None:
|
|
body = "{} {}".format(payload["icon_emoji"], body)
|
|
|
|
if body != "":
|
|
body = replace_formatting(replace_links(body).strip())
|
|
check_send_webhook_message(request, user_profile, user_specified_topic, body)
|
|
return json_success()
|
|
|
|
|
|
def add_block(block: Dict[str, Any], body: str) -> str:
|
|
block_type = block.get("type", None)
|
|
if block_type == "section":
|
|
if "text" in block:
|
|
text = block["text"]
|
|
while type(text) == dict: # handle stuff like block["text"]["text"]
|
|
text = text["text"]
|
|
body += f"\n\n{text}"
|
|
|
|
if "accessory" in block:
|
|
accessory = block["accessory"]
|
|
accessory_type = accessory["type"]
|
|
if accessory_type == "image":
|
|
# This should become  once proper Markdown images are supported
|
|
body += "\n[{alt_text}]({image_url})".format(**accessory)
|
|
|
|
return body
|
|
|
|
|
|
def add_attachment(attachment: Dict[str, Any], body: str) -> str:
|
|
attachment_body = ""
|
|
if "title" in attachment and "title_link" in attachment:
|
|
attachment_body += "[{title}]({title_link})\n".format(**attachment)
|
|
if "text" in attachment:
|
|
attachment_body += attachment["text"]
|
|
|
|
return body + attachment_body
|
|
|
|
|
|
def replace_links(text: str) -> str:
|
|
return re.sub(r"<(\w+?:\/\/.*?)\|(.*?)>", r"[\2](\1)", text)
|
|
|
|
|
|
def replace_formatting(text: str) -> str:
|
|
# Slack uses *text* for bold, whereas Zulip interprets that as italics
|
|
text = re.sub(r"([^\w])\*(?!\s+)([^\*^\n]+)(?<!\s)\*([^\w])", r"\1**\2**\3", text)
|
|
|
|
# Slack uses _text_ for emphasis, whereas Zulip interprets that as nothing
|
|
text = re.sub(r"([^\w])[_](?!\s+)([^\_\^\n]+)(?<!\s)[_]([^\w])", r"\1*\2*\3", text)
|
|
return text
|